[jboss-user] [EJB/JBoss] - problem with new bean I'm creating (EJB2.0)

I'm trying to create a new entity bean for an existing application. When I deploy I get the following error: anonymous wrote : org.jboss.deployment.DeploymentException: Field changeDate in prim-key-class must be of the same type. New table sql CREATE TABLE `projecthistory` ( | `ProjectId` int(11) NOT NULL default '0', | `ChangeDate` datetime NOT NULL, | `UserID` varchar(50) NOT NULL, | `Status` int(11) NOT NULL default '0', | PRIMARY KEY (`ProjectId`, `ChangeDate`), | KEY `projecthistory_ProjectID_FK` (`ProjectId`), | CONSTRAINT `projecthistory_ProjectID_FK` FOREIGN KEY (`ProjectId`) REFERENCES `projects` (`ID`) ON DELETE CASCADE ON UPDATE CASCADE | ); prim-key in ejb-jar.xml <prim-key-class>lingonet.projecthistory.ProjectHistoryKey</prim-key-class> The key class public class ProjectHistoryKey { | public Integer projectID; | public Date changeDate; | | public ProjectHistoryKey (Integer projectID, Date changeDate) { | this.projectID = projectID; | this.changeDate = changeDate; | } | } | I am using java.util.date in my java code, which works for other beans where the date isn't a primary key? Do I need to use java.sql.date or is there just a problem using dates in primary keys or something else entirely? Some guidance here would be appreciated. Mike View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4193845#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...